How to force reload of EntityHome object?

[grundor]

I have an issue related to a Blob field I am persisting to my database using Hibernate JPA implementation.

Basically from what I can tell after persisting or updating my entity to the database I am not able to call Blob.getBytes()  - it gives me the following exception:

Caused by: java.lang.UnsupportedOperationException: Blob may not be manipulated from creating session
     at org.hibernate.lob.BlobImpl.excep(BlobImpl.java:104)
     at org.hibernate.lob.BlobImpl.getBytes(BlobImpl.java:50)
     at com.leagueunited.entity.util.Image.getImage(Image.java:69)

From what I have read, I need to reload the entity from the database after persisting, prior to calling my getImage() routine.

My problem (probably a simple solution) is that I can't seem to force a reload on the entity.

Here is what I have tried:

    public void updatePhoto() {
         Photo photo = photoHome.getDefinedInstance();
         if (photo == null)
              return;
         
         if (photoHome.update() == "updated") {
             // Force reload from db to correctly load image blob
             photoHome.clearInstance();
             photoHome.setId(photo.getPhotoId());
         }
    }

How can I force photoHome (EntityHome) to reload the entity from the database?  Is there some kind of dirty flag I need to set?

-Mark